Finding the Fourth Proportional to 133.19, 199.48 and 121.75
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Solution
The fourth proportional to 133.19, 199.48 and 121.75 is: 182.35
Step by Step Solution
- Step 1: Write the proportion equation
133.19 : 199.48 = 121.75 : x - Step 2: Convert to fraction form
133.19/199.48 = 121.75/x - Step 3: Cross multiply
133.19x = 199.48 × 121.75 - Step 4: Simplify right side
133.19x = 24,286.69 - Step 5: Solve for x
x = 24,286.69/133.19 - Step 6: Final answer
x = 182.35
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.